On Fri, 24 Oct 2025 16:23:05 +0000, Dick Williams <[email protected]> wrote:
>Why would IBM want to sell a mainframe (zOS) to Google? >Do they process important transactions? This mindset has doomed z/OS. These are the wrong questions. IBM (International Business Machines) wants to sell to all businesses. Not all businesses are about important transactions. Instead, ask why isn't Google replacing their 5M Linux servers with 250,000 z/OS servers? What business problems does IBM solve that are important to Google? A single Google search moves hundreds of strings. The z MVST (move string) is a single instruction residing in cache. On the other hand, the STRCPY() function for other architectures is several instructions that reside in storage and must be moved to cache as needed. A Google search is heavy disk access. MVS has been running as a NAS since the 1960s. Google developed GO 15 years ago but missed important and simple features (e.g. recently discussed PRINTF compile time type validation). You get what you pay for and Google pays $0 for Linux, GCC and others. Linux is looking to eliminate big endian support despite it being of little impact to Linux. Most endianess is handled by hardware instructions and is very little impact to programs. https://www.phoronix.com/news/Torvalds-No-RISC-V-BE ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
